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Tochigi Nasu Town

Ashino Onsen

The pH 9.9 beauty bath, an invigorating medicinal herb bath, and a mint-scented mist sauna for the ultimate therapeutic bathing experience

  • Drinking spring water available
  • Natural Hot Spring
  • Free-flow from source
  • Sauna Available
  • Cold Bath Available

About Ashino Onsen

Ashino Onsen is located amid the rich natural surroundings of Nasu and is a modern therapeutic bath resort said to be so effective that it is known as the "canes-forget bath." Its private hot spring source, with an astonishing pH of 9.9, has a famously slippery, silky feel, as if bathing in lotion, and is offered as 100% free-flowing spring water with no added water. Its signature medicinal herb bath features a rich extract of carefully blended herbal ingredients, creating a pleasantly stimulating experience that envelops the whole body. The sauna is a mint-scented medicinal herb mist sauna, where the mild temperature gently moistens the nose and throat and leads you into deep relaxation. The outdoor area also includes a crisp, refreshing cold plunge bath. It is a supreme retreat where the power of genuine hot springs, the healing force of herbs that stimulate all five senses, and the sauna come together to soothe both body and mind at the deepest level.

Hot SpringONSEN

Free-flow from source

Ashino Onsen

Two private spring sources, including the famed Tsuru no Yu, which boasts an astonishingly alkaline pH of 9.9. Offered as 100% free-flowing spring water with no added water or circulation, it has earned overwhelming support as a beauty bath that leaves the skin smooth and refined. The medicinal herb bath, made with a proprietary blend of herbal ingredients, is characterized by its strong stimulation and rich aroma, making it an exquisite bathing space where you can feel vitality from deep within the body.

SaunaSAUNA

01SAUNA

Medicinal Herb Mist Sauna

Men'sWomen's

A high-humidity mist sauna with a refreshing mint fragrance. Although the temperature is mild, the fine mist containing herbal ingredients gently envelops the whole body, moistens the nose and throat, and gradually warms you through. Combined with the invigorating medicinal herb bath, its appeal lies in the heightened refreshing effect you can feel. In the quiet room, you can spend time soothing both body and mind while being healed by the scent of herbs.

Cold BathCOLD BATH

01COLD BATH

Cold Bath

Men'sWomen's

A cold plunge bath installed in the outdoor area, prized for its sharp, crisp chill. Its superb setting at around 15°C makes contrast bathing with the sauna and medicinal herb bath even more effective, helping switch you into a deeper state of totonou. In the clean air of Nasu, you can savor a blissful cooling session that refreshingly tightens your overheated body.

Facility Information

Address
1461 Ashino, Nasu, Nasu District, Tochigi 329-3443, Japan
Business Hours
08:00〜21:00

Irregular Holidays

Closed Days
Irregular Holidays
Gender Access
Gender Separated
Tattoo Policy (Communal Bath)
No Tattoos
Official Website
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Access

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